Patrologiae cursus completus: seu bibliotheca universalis, integra ...
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
March 20, 2009
A better description ...
A better description of this volume would be the third volume of the works of Eusebius of Pamphilia. It's Volume 21 of Migne's Patrologia Graeca (properly entitled Patrologiae Cursus Completus Series Gracae).